diff --git a/.laminas-ci.json b/.laminas-ci.json
index 0967ef4..6238f6f 100644
--- a/.laminas-ci.json
+++ b/.laminas-ci.json
@@ -1 +1,6 @@
-{}
+{
+    "ignore_php_platform_requirements": {
+        "8.4": true
+    },
+    "backwardCompatibilityCheck": true
+}
diff --git a/composer.json b/composer.json
index b5c056d..8f8999f 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
         }
     },
     "require": {
-        "php": "~8.1.0 || ~8.2.0 || ~8.3.0"
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0"
     },
     "require-dev": {
         "laminas/laminas-coding-standard": "~3.0.0",
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 6948200..3333977 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -10,9 +10,11 @@
          displayDetailsOnTestsThatTriggerErrors="true"
          displayDetailsOnTestsThatTriggerNotices="true"
          displayDetailsOnTestsThatTriggerWarnings="true"
+         displayDetailsOnPhpunitDeprecations="true"
          failOnWarning="true"
          failOnNotice="true"
          failOnDeprecation="true"
+         failOnPhpunitDeprecation="true"
 >
     <testsuites>
         <testsuite name="laminas-permissions-rbac Test Suite">